868867 has 2 divisors, whose sum is σ = 868868. Its totient is φ = 868866.

The previous prime is 868849. The next prime is 868873. The reversal of 868867 is 768868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868867 - 2⁷ = 868739 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (868817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434433 + 434434.

It is an arithmetic number, because the mean of its divisors is an integer number (434434).

2⁸⁶⁸⁸⁶⁷ is an apocalyptic number.

868867 is a deficient number, since it is larger than the sum of its proper divisors (1).

868867 is an equidigital number, since it uses as much as digits as its factorization.

868867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 868867 is about 932.1303556907. The cubic root of 868867 is about 95.4225681935.

Subtracting from 868867 its reverse (768868), we obtain a palindrome (99999).

The spelling of 868867 in words is "eight hundred sixty-eight thousand, eight hundred sixty-seven".